Wrap PlaybackExceptions in TransformationExceptions.

PiperOrigin-RevId: 420032157

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformationException.java

@@ -284,17 +284,18 @@ public final class TransformationException extends Exception {
   }
 
   /**
-   * Converts a {@link PlaybackException} to a {@code TransformationException}.
+   * Creates an instance for a {@link PlaybackException}.
    *
-   * <p>If no corresponding error code exists, the created instance will have {@link
-   * #ERROR_CODE_UNSPECIFIED}.
+   * <p>If there is a corresponding {@link TransformationException.ErrorCode} for the {@link
+   * PlaybackException.ErrorCode}, this error code and the same message are used for the created
+   * instance. Otherwise, this is equivalent to {@link #createForUnexpected(Exception)}.
    */
   /* package */ static TransformationException createForPlaybackException(
       PlaybackException exception) {
-    return new TransformationException(
-        exception.getMessage(),
-        exception.getCause(),
-        getErrorCodeForName(exception.getErrorCodeName()));
+    @ErrorCode int errorCode = getErrorCodeForName(exception.getErrorCodeName());
+    return errorCode == ERROR_CODE_UNSPECIFIED
+        ? createForUnexpected(exception)
+        : new TransformationException(exception.getMessage(), exception, errorCode);
   }
 
   /** An error code which identifies the cause of the transformation failure. */

library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerTest.java

@@ -340,7 +340,8 @@ public final class TransformerTest {
     transformer.startTransformation(mediaItem, outputPath);
     TransformationException exception = TransformerTestRunner.runUntilError(transformer);
 
-    assertThat(exception).hasCauseThat().isInstanceOf(IOException.class);
+    assertThat(exception).hasCauseThat().hasCauseThat().isInstanceOf(IOException.class);
+    assertThat(exception.errorCode).isEqualTo(TransformationException.ERROR_CODE_IO_FILE_NOT_FOUND);
   }
 
   @Test